+ \bf{Note: actual muxing is deceptively simple, but like a DRAM cell
+ it's actually about the extras (routing, docs, specs etc).\\
+ Just as DRAM Cell != DDR3/4, Muxer Cell != Pinmux}
+}
+
+
+\frame{\frametitle{What options are available (at time of writing)? [1]}
+
+ \vspace{6pt}
+ {\bf Commercial licensed}:
+ \vspace{4pt}
+ \begin{itemize}
+ \item Cost: unknown (and ultimately doesn't matter)
+ \item Flexibility: unknown (NDAs required in order to find out)
+ \item Language: unknown (NDAs required in order to find out)
+ \item Capability for auto-generation of Docs: unknown.
+ \item Capability for auto-generation of ancillary resources: unknown.
+ \item Suitability for wide range of systems: unknown.
+ \vspace{4pt}
+ \item Suitability for saving RISC-V ecosystem money: {\bf NONE }
+ \item Suitability for collaboration: {\bf ZERO} (prohibitive licensing)
+ \end{itemize}
+ \vspace{6pt}
+ Commercial licensees are isolated and cut off from the benefits
+ and resources of the Libre world. Translation: USD \$200k+ NREs.
+}
+
+
+\frame{\frametitle{What options are available (at time of writing)? [2]}
+
+ \vspace{6pt}
+ {\bf SiFive IOF (Freedom E310, Unleashed U540)}:
+ \vspace{4pt}
+ \begin{itemize}
+ \item License: Good!
+ \item Flexibility: not so good.
+ \item Language: chisel3.
+ \item Capability for auto-generation of Docs: none.
+ \item Capability for auto-generation of ancillary resources: partial.
+ \item Suitability for wide range of systems: not so good.
+ \vspace{4pt}
+ \item Suitability for saving RISC-V ecosystem money: {\bf Low }\\
+ \item Suitability for collaboration: {\bf GOOD} (but: written in Chisel3)
+ \end{itemize}
+ \vspace{6pt}
+ Using SiFive IOF has Libre benefits, but it's incomplete and
+ harder to find Chisel3 programmers (than e.g. for python).
+}
+
+
+\frame{\frametitle{What options are available (at time of writing)? [3]}
+
+ \vspace{10pt}
+ \begin{center}
+ {\Huge
+ None. No suitable\vspace{20pt}\\
+ Libre-licensed\vspace{20pt}\\
+ pinmux exists\vspace{20pt}
+ }
+ \\
+ (which is really weird, given how there's so many libre UART,
+ SPI and other peripheral libraries, even libre-licensed PCIe and
+ SATA PHYs and even USB3 Pipe. Hence the reason for this initiative)
+ \end{center}
+